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Matter

Choose the co...

Question

Choose the correct option:
A pure substance can have:
(A) only one type of particles (B) a variable composition in particles (C) different type of particles (D) both a and b

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Solution

A pure substance may be an element or compound. But it always consists of only one type of particles that is all particles have identical chemical and physical properties.
Ans : (a)

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Similar questions

Q. A pure substance is made up of only one type of particles.

Q. Which of the following statements are true for pure substances ?
(i) pure substances contain only one kind of particles
(ii) pure substances may be compounds or mixtures
(iii) pure substances have the same composition throughout
(iv) pure substances can be exemplified by all elements other than nickel

(a) (i) and (ii)
(b) (i) and (iii)
(c) (iii) and (iv)
(d) (ii) and (iii)

Q. Which of the following statement(s) is/are false?
1. A pure substance is heterogeneous in nature.
2. The composition of a pure substance can be altered by any physical means.
3. A pure substance contains a fixed number of particles.

The correct word from the given set to make the following statement true is:
(bakelite, compound, element, pure, oxygen, mercury)

______ is a substance that contains only one type of fundamental particle.

The constituent particles of a pure substance are different in their chemical nature.

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